Shopify Metafields

Metafields allow you to store additional data on Shopify resources (Products, Orders, Customers, Shops) that aren't included in the default schema (e.g., "washing instructions" for a product).

1. Concepts

• Namespace: Grouping folder (e.g., my_app, global).
• Key: Specific field name (e.g., washing_instructions).
• Type: Data type (e.g., single_line_text_field, number_integer, json).
• Owner: The resource attaching the data (Product ID, Shop ID).

2. Metafield Definitions (Standard)

Always use Metafield Definitions (pinned metafields) when possible. This integrates them into the Admin UI and ensures standard processing.

• Create: Settings > Custom Data > [Resource] > Add definition.
• Access: namespace.key

3. Accessing in Liquid